// Copyright 2024 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * Get a boolean from the envDir.
 *
 * Return true/false if the value matches 'true'/'false' (case sensitive).
 * Otherwise, return null.
 */
export function getBoolEnv(
  envDir: Record<string, string | undefined>,
  key: string,
): boolean | null {
  const value = envDir[key];
  if (value === 'true') {
    return true;
  }
  if (value === 'false') {
    return false;
  }
  return null;
}
